Toenails can reveal clues about your health and lifestyle. While brittle toenails often just happen along with aging, they could also hint at a vitamin deficiency or fungal infection. By zeroing in on ...

If you’ve ever stared at your tiny, barely-there pinky toenail and wondered why it looks like the mini version of a “real” nail, you’re not alone. The fifth toenail is a biological leftover — a ...